<template>
  <div>
    <el-form :inline="true" :model="cForm" :disabled="!isShowList">
            <el-form-item label="一级分类">
        <el-select v-model="cForm.category1Id" placeholder="请选择" @change="handlerCategory1">
          <el-option :label="c1.name" :value="c1.id" v-for="(c1,index) in category1List" :key="c1.id"></el-option>
        </el-select>
      </el-form-item>  
      <el-form-item label="二级分类">
        <el-select v-model="cForm.category2Id" placeholder="请选择" @change="handlerCategory2">
          <el-option :label="c2.name" :value="c2.id" v-for="(c2,index) in category2List" :key="c2.id"></el-option>
        </el-select>
      </el-form-item> 
      <el-form-item label="三级分类">
        <el-select v-model="cForm.category3Id" placeholder="请选择" @change="handlerCategory3">
          <el-option :label="c3.name" :value="c3.id" v-for="(c3,index) in category3List" :key="c3.id"></el-option>
        </el-select>
      </el-form-item> 
    </el-form>
  </div>
</template>

<script>
export default {
  name: "CategoruSelector",
  props:['isShowList'],
  data(){
      return{
          cForm:{
             category1Id:'',
             category2Id:'',
             category3Id:''
           },
           category1List:[],
           category2List:[],
           category3List:[]
      }
  },
  mounted(){
      this.getCategory1List()
  },
  methods:{
      async getCategory1List(){
          try{
             const result = await this.$API.category.getCategory1()
             if(result.code === 200 || result.code === 20000){
                this.category1List = result.data
             }
          }catch(error){
                this.$message.error('获取一级分类失败' + error.message)
          }
      },
    //选中1级的时候回调,请求获取二级分类
    async handlerCategory1(category1Id){
        //重新选择1级,清空23级对应数据
        this.cForm.category2Id = ''
        this.cForm.category3Id = ''
        this.category2List = []
        this.category3List = []

        this.$emit('changeCategory',{categoryId:category1Id,level:1})

      try {
        const result = await this.$API.category.getCategory2(category1Id)
        if(result.code === 200 || result.code === 20000){
          this.category2List = result.data
        }
      } catch (error) {
        this.$message.error('获取2级分类失败'+error.message)
      }
    },
    //选中2级的时候回调,请求获取二三级分类
    async handlerCategory2(category2Id){

        // 重新选择2级，先清空3级对应的数据
      this.cForm.category3Id = ''
      this.category3List = []
        this.$emit('changeCategory',{categoryId:category2Id,level:2})

      try {
        const result = await this.$API.category.getCategory3(category2Id)
        if(result.code === 200 || result.code === 20000){
          this.category3List = result.data
        }
      } catch (error) {
        this.$message.error('获取3级分类失败'+error.message)
      }
    },


    handlerCategory3(category3Id){
         this.$emit('changeCategory',{categoryId:category3Id,level:3})
    }


  }
};
</script>

<style>
</style>
